USB 2.0: Front: Two, covered Rear: Five One powered USB, 24 V Two RS-232 (power configurable) ports standard (serial) One parallel port available as an option2 One eSATA port available as an option2 Two RS-232 powered configurable ports, optional (for a total of 42) Two USB+ PWR 12 V cards, optional (three 12 V USB+ PWR per card) for a total of 62 PS/2: One color-coded support for keyboard (purple) One color-coded support for mouse (green) One RJ-11 cash drawer port Video: One VGA One DisplayPort v1.1a Provides integrated dual independent monitor support DVI output available via optional DisplayPort to DVI adapter Audio: Rear: Line input (supports microphone or line input) and line out All ports are 3.5 mm in diameter One RJ-45 (NIC) port